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72060018 = 2316373681
BaseRepresentation
bin1000100101110…
…00110001110010
312000121000202120
410102320301302
5121421410033
611052255110
71533333342
oct422706162
9160530676
1072060018
1137748838
1220171496
1311c10384
1497dad22
1564d61b3
hex44b8c72

72060018 has 16 divisors (see below), whose sum is σ = 145006176. Its totient is φ = 23872320.

The previous prime is 72060013. The next prime is 72060029. The reversal of 72060018 is 81006027.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72060018.

It is not an unprimeable number, because it can be changed into a prime (72060011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35863 + ... + 37818.

It is an arithmetic number, because the mean of its divisors is an integer number (9062886).

Almost surely, 272060018 is an apocalyptic number.

72060018 is an abundant number, since it is smaller than the sum of its proper divisors (72946158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72060018 is a wasteful number, since it uses less digits than its factorization.

72060018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73849.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 72060018 is about 8488.8172321001. The cubic root of 72060018 is about 416.1323273864.

The spelling of 72060018 in words is "seventy-two million, sixty thousand, eighteen".

Divisors: 1 2 3 6 163 326 489 978 73681 147362 221043 442086 12010003 24020006 36030009 72060018